Reversing and speed-changing gearing.



No. 864,707. I PATENTBD AUG. 27, 1907. V G. G. TALMAGE.

REVERSING AND-SPEED CHANGING GE ARING. APPLIOATION'FILBD NOV. 10. 1906.

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No. 864,707. PATENTED AUG. 27, 1907.

G. G. TALMAGE. RBVERSING AND SPEED CHANGING GEARING.

APPLICATION FILED NOV.10. 1908.

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GEORGE G. TALMAGE, OF WASHTA, IOWA.

REVERSING AND SPEED-CHANGING GEARING.

Specification of Letters Patent.

Patented Aug. 27, 1907.

Application filed November 10, 1906. Serial No. 342,826.

To all whom it may concern:

Be it known that 1, GEORGE G. TALMAGE, a citizen of the United States,residing at Washta, in the county of Cherokee and State of Iowa, haveinvented certain new and useful Improvements in Reversing and Speed-Ohanging Gearing, of which the following is a specification.

My invention relates to devices for reversing and changing the forwardspeed of a driven member relative to the direction and speed of adriving shaft, using only one set of planetary gears, which are alwaysin mesh no shifting of gears required for reversing or changing theforward speed which eliminates all possibility of stripping the gearsand allows the applying of the power to the driven member at all timeswith safety to the device.

My improved gearing will be described in detail hereinafter andillustrated in the accompanying drawings in which- Figure 1 is a viewpartly in section of my improved gearing, Fig. 2 a cross section, andFig. 3, a fragmental end view of the differential gear casing.

In the drawings similar reference characters indicate correspondingparts throughout all of the views.

1 indicates the drive shaft on which is keyed a pinion 2.

3 indicates a sleeve revolubly mounted on shaft 1 having oneend shapedas the casing or drum 4 of a differential gearing 5. i

4; indicates lugs on drum 4 and i" plates forming the end of the drum orcasing having notches 4 to seat on said lugs. 6 indicates a circularflange on the other 'end of sleeve 3.

7 indicates a disk revolubly and slidably mounted on sleeve 3 having theflange 8 on its outer edge on which is formed gear teeth 9.

10 represents a friction surface of soft metal or other selectedmaterial secured to the inner side of disk 7 and adapted to engageflange 6 when the disk is actuated for that purpose by means of a clutchconsisting of sliding member 11 actuated by operating lever 12 thatengages arms 13 pivotally secured to sleeve 14, the free end of saidarms engaging disk 7.

15 represents a spring washer to normally hold the disk 7 in a positionso that the friction surface 10 is not in engagement with flange G. 16indicates another disk slidably and revolubly mounted on drive shaft 1having secured thereto stud shafts 17 on which are journaled spur gears18 that mesh with pinion 2 and gear teeth 9.

19 indicates an annular disk secured to the ends of stud shafts 17having a friction surface 20 of soft metal or other selected materialsecured to its outer surface that is adapted to engage flange (5 whenthe disk 16 is actuated for that purpose by the clutch consisting of thesliding member 2]. engaging the arms 22 pivotally sccured to sleeve 23,the free ends of the arms 22 engaging said disk 16.

24 indicates the operating lever for actuating sliding member 21 an d 25a spring washer to normally hold the disk 16 in the position that thefriction surface 20 does not engage flange G.

The outer edge of disk 16 is provided with a flange 26 on which ismounted band brake 27 while 28 represents a band brake mounted on flange8.

In operation if the disk 7 is actuated by its clutch so that thefriction surface 10 engages flange 6, and the band brake 27 be setagainst "flange 26, power will be transmitted through pinion 2, spurgears 18 and gear teeth 9 to the disk 7 and from it to flange 6 andsleeve 3 to drum 4 so as to rotate it in a direction reverse to thedirection of the shaft 1 and at a slower speed. If on the other hand theband brake 28 be set again st flange 8 an d the disk 16 be actuated byits operating clutch so that friction surface 20 engages flange 6 thenpower will be transmitted from pinion 2 to spur gears 18 which wouldtravel around pinion 2, because of their meshing with gear teeth 9,carrying disk 16 and annular disk 19 with them and actuating flange 6,sleeve 3 and drum 4 in the same direction as the drive shaft, but at areduced speed because of the difference in the sizes of pinion 2 andspur gears 18. When it is desired to drive the drum 4 at the same speedas the shaft both band brakes are left open and both clutches actuatedso that both friction surfaces 10 and 20 engage flange 6.

Having thus described my invention what 1 claim is- 1. In a reversingand changeable speed gearing, a drive shaft, a sleeve mounted on saidshaft having one end forming the driving member of a differentialgearing, the other end of the sleeve formed with a flange, a pinionkeyed to said drive shaft, and means to impart motion to said flangefrom said pinion, substantially as shown and described.

2. In a-reversing and changeable speed gearing, a drive shaft, a sleevemounted on said shaft having one end forming the driving member of adifferential gearing, the other end 01? the sleeve formed with a flange,a pinion keyed to the drive shaft, a disk revolubly and slidably mountedon the sleeve aforesaid having a flange with gear teeth thereon, saiddisk to engage the flange on the sleeve, another disk provided with afriction surface revolubly and slidably mounted on the shaft, spur gearsjournalcd on said disk and meshing with the pinion and gear teethaforesaid, said disk having an annular friction surface connectedtherewith to engage the sleeve flange, and means to actuate said disks,substantially as shown and described.

3. A reversing and changeable gearing comprising a drive shaft, a pinionkeyed to said shaft, a sleeve rcvolubly mounted on the shaft having oneof its ends forming the driving member of a differential gearing, theother end of said sleeve formed with a flange extending laterallytherefrom, a disk slidably and revolubly mounted on the sleeve,

said disk provided with a friction surface adapted to engage saidflange, said disk also provided with a lateral flange extendingtherefrom having gear teeth formed thereon, a hand-brake engaging saidflange, a disk revolubly and slidahly mounted on the drive shaft, studshafts secured to the disk, spur gears journaled on said stud shafts andmeshing with the pinion and gear teeth aforesaid, an annular disksecured to said stud shafts and having a friction surface thereon, thedisk carrying the stud shafts provided with a flange extending laterallytherefrom, a band brake 1O engaging said flange, and clutches to actuatethe disks, substantially as shown and described.

In testimony whereof 1 hereto aflix my signature in the presence of twowitnesses.

GEORGE G. TALMAGE.

Witnesses MALCOLM McGRnGoR, R. O. BARNES.

It is hereby certified that in Letters Patent No. 864,707, grantedAugust 27, 1907, upon the application of George G; Talmage, of W ashta,Iowa, for an improvement in Reversing and Speed-Changing Gearing, anerror appears in the printed specification requiring correction, asfollows: Page 1, line 101, the words provided with a friction surfaceshould be stricken out and inserted after the Word disk in line 100,same page; and that the said Letters Patent should be read with thiscorrection therein that the same may conform to the record of the casein the Patent Oflice.

Signed and sealed this 15th day of October, A. D., 1907.

' EDWARD B. MOORE,

Commissioner of Patents.

[SEAL]

